compiler warning fix

ares/ares_dns.h

@@ -21,12 +21,12 @@
 #define DNS__16BIT(p)                   (((p)[0] << 8) | (p)[1])
 #define DNS__32BIT(p)                   (((p)[0] << 24) | ((p)[1] << 16) | \
                                          ((p)[2] << 8) | (p)[3])
-#define DNS__SET16BIT(p, v)             (((p)[0] = ((v) >> 8) & 0xff), \
-                                         ((p)[1] = (v) & 0xff))
-#define DNS__SET32BIT(p, v)             (((p)[0] = ((v) >> 24) & 0xff), \
-                                         ((p)[1] = ((v) >> 16) & 0xff), \
-                                         ((p)[2] = ((v) >> 8) & 0xff), \
-                                         ((p)[3] = (v) & 0xff))
+#define DNS__SET16BIT(p, v)             (((p)[0] = (unsigned char)((v) >> 8) & 0xff), \
+                                         ((p)[1] = (unsigned char)(v) & 0xff))
+#define DNS__SET32BIT(p, v)             (((p)[0] = (unsigned char)((v) >> 24) & 0xff), \
+                                         ((p)[1] = (unsigned char)((v) >> 16) & 0xff), \
+                                         ((p)[2] = (unsigned char)((v) >> 8) & 0xff), \
+                                         ((p)[3] = (unsigned char)(v) & 0xff))
 
 #if 0
 /* we cannot use this approach on systems where we can't access 16/32 bit

ares/ares_send.c

@@ -73,7 +73,7 @@ void ares_send(ares_channel channel, const unsigned char *qbuf, int qlen,
     }
 
   /* Compute the query ID.  Start with no timeout. */
-  query->qid = DNS_HEADER_QID(qbuf);
+  query->qid = (unsigned short)DNS_HEADER_QID(qbuf);
   query->timeout = 0;
 
   /* Form the TCP query buffer by prepending qlen (as two